add ability to open status by URL from search (fix #53)

"Various apps are available" is now a hyperlink

adjusted to allow choosing it, yet

before. In the API, attachments now can be either image, video or gifv. Gifv
is to be treated like images in terms of behaviour, but are videos by file
type.

Remove note about following Gargron@mastodon.social from getting started text

loaded status; do not preload submitted statuses into community/public
timelines, unless those timelines have already been loaded; do not
close streaming API connections for community/public timelines, once
they have been established (most users navigate back to them eventually)

for those errors

now allows to cycle through multiple images

"whole known network" which is what public timeline used to be

Only domain blocks with suspend severity will block PuSH subscriptions
Silenced accounts should not appear in conversations unless followed

The status is not showing anymore after clicking on it

This makes so clicking the link to the github opens in a new tab or windows.

I just keep getting frustrated clicking the link to github and then losing my place in my home timeline >_> that's all

Fix issue with detailed status view not supporting unreblogging/unfavouriting

Fix #635 - Include the initially-reported status in report UI even if it's not
among the user's most recent statuses

I haven't had a chance to test this, because I don't currently have a fully functioning computer I can set up a dev-environment on, but this *should* make it so when a user toggles a post to be private, a disclaimer appears clarifying what "private" really means.

to only those from local users; Add link to "extended information" to
getting started in the UI; Add defaults for posting privacy; Change
how publish button looks depending on posting privacy chosen